Add Receive via Lightning address

[Bosch-0]

Another LSP service added to list, will add details soon.

Also added a few other LSP services to this page in a2bf7eb (accidentally merged straight away sorry).

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[johnsBeharry]

We take yolo merge to the next level here 🤣

[johnsBeharry]

Let's dive in deeper with this one.

Cause technically it requires a web service for it's payment request generator, but it's also capability that the LSP may provide and fits into our lose definition of LSP #10.

What does offering lightning addresses to users that have a partial node on device require though?

1. A macaroon which has permissions to generate invoices for LNURL-pay.
2. A http server to host a LNURL "node"
3. A connection to the end users lightning node in order to make several types of functions. Keep in mind there is the constraint: mobile, sometimes offline.
   a. openChannel
   b. payInvoice
   c. addInvoice
   d. getInvoiceStatus

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Command for starting an LNURL server using lnurl-node:

lnurl server \
	--host "localhost" \
	--port "3000" \
	--auth.apiKeys '[{"id":"46f8cab814de07a8a65f","key":"ee7678f6fa5ab9cf3aa23148ef06553edd858a09639b3687113a5d5cdb5a2a67","encoding":"hex"}]' \
	--lightning.backend "lnd" \
	--lightning.config '{"hostname": "127.0.0.1:8080", "cert": "/path/to/tls.cert", "macaroon": "/path/to/admin.macaroon"}'

There seems to be a way to generate LNURLs offline. We need to find out how it gets the invoice, because this would be relevant to a mobile node which may be offline.

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After writing all of this I should have asked: Does Blixt provide a lightning address to users? If they do then we would have to check how they allow this.

[Bosch-0]

An open-source Lightning address server also exists: https://github.com/fiatjaf/satdress

Blixt doesn't have receiving but they likely will soon.